The manager consumes the agent module's holdings-changed, keeping each report
as its node's latest and considering them at once, in place of reading the
agent module's state; once it hears them, at every start after its
carry-over, it says holdings.asked with its time and who asks, so every node
says what it holds again.
Builds: design 39 bus-and-switch §23, §46, B12, B22
Claude-Session: https://claude.ai/code/session_01NcbgfHb9d4T9nq5Q6WqdiJ
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